Carbureter.



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To all whom it mag concern,-

'Be it known that I, SYDNEY I. Pims'cotrr,

a citizen of the United States residing at. Brooklyn, county of Kings,and State "of New York, have invented a new and useful Improvement inCarbureters, ofwhich the following is-a specification.

I provision of production of a carbureter of the type dis This inventionrelates toan improvement in carbureters.

In my Patent No. 1,143,227, issued June 15, 1915, and in my co-pendingapplication Serial No. 6025, filed February 4, 1915, there is discloseda carbureter'provided with an air intake having co-acting movable 'memfbers adapted to amplify or enlarge the air intake and vice versa,without changing the form of the intake or its character as a Ven turitube.

The main object of the present invention is the production of animproved carbureter of the general type disclosed in said co-pendingapplications,although the present invention is also applicable to othertypes of carbureters.

In the carbureter disclosed in the applications above mentioned, themovable members or air intake amplifiers are moved in one direction by acurrent of air passing through the intake and induced by'the suction ofan engine in connection .with which the device is used, or forcedthrough the intake. by other means. In the event of asudden opening ofthe throttlefrom idling position to wide open position, or the reverse;or- .in the event of violent bouncing of a car-carrying the device whenrunning over a rough road at high speed, the amplifiers might move fromone position to another too rapidly to maintain their highest possibleefliciency. r r 1 The present invention contemplates the meanscooperating. with-an air intake member for retarding the mo ement ofsaid member in both directions not only,

when the throttle is carelessly or accidentally operated too suddenly,but also whenever a tendency exists for the amplifiers-to be suddenlymoved by bouncing ofa car carrying the device, the cooperatingmeansbeing of such a character that it will'not in anyway interfere with thenormal action of the 'intake amplifiers.

A further object of the invention is the closed in the applicationsabove referred to, but which is simpler and more inexpensive.

Speciflead mi of Iet'ters Patent.

cannon-Eran.

Patented Feb. 22, 1916.

a nmantnInca.re 'mm- 12, 1515. Serial m; 7,678."

With these and other objects not specifically mentioned in view, theinvention cons sts-1n certain constructions and combinations which willbe hereinafter fully described and then specifically set forth-1n theclalms hereunto appended.

In the accompanying drawings, which form a part of this specificationand in wh ch hke characters of reference indicate the same or likeparts, Figure 1 is a side elevat1on-partly broken away-of a deviceconstructed in accordance with the inven- ,tion.' Fig. '2 is a sectionalview taken on the line 22'in Fig. 1.

In carrying the invention into effect, there is provided an air intakehaving a member movable in two directions, and cooperating means forretarding the movement of said member in both directions. In the bestconstructions, thissmeans will be normally inoperative and. is designedto be operative only 'when the tendency exists for a movement of theintake member which is too rapid or violent for the maintenance of the'highest possible efliciency. In the best constructions also, thiscooperating means will be controlled by air trapped in a positionisolated from'the air-intake. In the best constructions also, astationary abutment will be employed and located within the trapped air,this abutment cooperating with the movable member, not only for thepurpose of --retardin member, but also or the purpose of limiting themovement of said member under both normal and abnormal conditions. Inthe the movement of said best constructions also, the device will in-.

7 within the casing. In the best constructions also, the casing may beadapted, not only for housing "the intake amplifiers and the retardingmeans therefor, but it may also carry as aunit therewitha float chamberand ,operative connections.

' The device selected to illustrate the invention is'but one of manypossible concrete embodiments of the same, and the invention thereforeis not to be restricted to the preelude a. casing forming a chamber openat one side-only," a plate for closing the open cise details of thestructure shown and de- I scribed. Furthermore, certain parts of theinvention are capable of use independent of other parts, and suchindependent use is contemplated.

Referring to the drawings, 3 indicates generally a casting or casingwhich in 'cludes a fiat wall 4, semi-circular end Walls 5 and (5, and afloat chamber 7 adjacent the wall 6. The casing is further provided Withan inlet chamber 8 in which is bridged a fuel nozzle supporting boss 9,the inlet chamber-8 and boss 9 opening into the space within the casingfrom below. Leading out of the space within the casing in an upwarddirection is a throttle chamber 10 formed by walls integral with thecasing 3,

and extending upwardly therefrom. Within the throttle chamber 10 islocated a throttle 11 of well known construction and the upper end ofthe chamber 10 terminates in a flange 12 provided with suitable holes 13through which bolts may be passed to secure the device to the manifoldof an engine. The casing 3 is further provided with a drain-cock 14 ofwell known construction and with a gasolene inlet 15 also of well knownconstruction, and the open upper end of the float chamber 7 is closed bya plate 16 held in position by means of a spring 17 and screw 18.\Vithin this float chamber is located a float 19 of well knownconstruction. A channel 20 leads from the float chamber to the interiorof the boss 9 before referred to, and secured in said boss is a fuelnozzle 21 of well known construction. A plug 22 is provided and threadsinto the lower part of the boss 9, and threaded into this plug22 is acap screw 23 serving to hold an inlet pipe 24 adjustably in positionbelow the inlet chamber 8 and in communication therewith. It will benoted that the chamber formed by the casing is open at one side and thisside is closed by means of a plate 25, preferably formed by a diecasting to avoid machine work that would otherwise be necessary, thisplate being fitted to a shoulder 26 rabbeted in the walls 5 and 6 forthis purpose. The plate 25 is held in position by means-of two throughbolts 27 extending through suitable apertures in the plate and in therear wall 4 of the casing.

These through bolts 27 also serve to sup port the rocking intakeamplifiers 28 which are intergeared and provided with semi-circulargrooves 29 of progressively increasing radius.

Except in so far as the particular construction of the chamber in whichthe amplifiers operate is concerned, the structure so far described isfully disclosed in the applications before referred to, and reference ismade to said applications for a full disclosure of the objects and modeof operation of the amplifiers and connections,

said description of the mode of operation being .omitted herefrom in theinterest brevity and clearness.

Each of the amplifiers 28 differs from the amplifiers disclosed in theapplications above referred to in being provided with a pair of planeradial walls 30 and 31 mounted substantially at right angles andextending across the full width of the amplifier from the rear wall atof the casing to the closing plate 25. By an inspection of Fig. 1, itwill be readily understood that air is trapped between these radialwalls 30 and 31, the semi-circular walls 5 and 6, the flat wall 4 of thecasing, and the flat inner surface of the plate 25. Cooperating with theradial walls 30 and 31 of each amplifier is an abutment 32 locatedwithin the space between said walls and consequently within the trappedair, these abutments 32 being die cast with the plate 25, although inoer-- tain constructions they may be otherwise mounted. A narrow spacemarked 33 is left between the edge of each abutment 32 and the hub. ofeach amplifier 28, and another narrow space marked 3% may, if desired,be left between the'extreme edge of each abutment and the rear wall 4 ofthe casing. This is for permitting the passage of air from one side ofthe abutment tothe other as the amplifier rocks slowly in normaloperation, so that the passage of air from one side to the other of theabutment does not interfere with the rocking movement of the amplifiersunder normal conditions. If, however, the amplifiers are suddenly rockedin either direction, the large volume of air trapped between theabutment 32 and radial Wall 30 or radial wall 31as the case may becannotfreely pass from one side of the abutment to the other, and theresistance to the passage of the air through the narrow spaces 33 and 31operates to retard the movement of the amplifier. It will be readilyunderstood that the abutment also serves as a limiting stop at bothextremes of movement of the amplifier.

It may be here remarked that the drawings show the parts in inoperativeposition with closed throttle, but it will be readilyunderstood thatwhen the device is in operation, the adjacent parts of the amplifiersmove upwardly more or less, according to the position of the throttleand speed of the. engine; and this results in moving the walls 31 awayfrom the abutment 32 so that during the normal operation of the device,there is trapped air on both sides of the abutment 32, and consequentlyany sudden change of amplifier position in either direction will beretarded by the walls 30 or 31 and the cotiperating abutment 32.

What I claim "is:

1. In a carbureter, the combination with an air intake having a pair ofmembers movable in two directions, of coiiperating pneumatic means forretarding the movement of said members in both directionfsand a fuelnozzle-located between and cooperating with said members. a carbureter,the combination with an air intake having a pair of rocking members, ofcoiiperating pneumatic means for retarding the movement of said membersin both directions, and a fuel nozzle located between and cooperativewith said members.

. 3. In a carburetor, the combination with an air intake having a pairof members adapted to be moved in one direction by the suction of: anengine in connection with which the device is used and to be moved in.

which the device'is used and to be moved in the opposite direction bygravity, of cooperating means for retarding the movement of said membersin both directions, and a fuel nozzle locatedbetween and cooperatingwith said members. M

-5. In a carbureter, the combination with an air intake having a pair ofmembers adaptedto be rocked in one direction by the suction of an enginein connection with which the device is used and to be rocked in theopposite direction by gravity, of cooperating means for retarding themovement of saidmembers in both directions, and a fuel nozzle" locatedbetween and coiiperating with said members.

6. In a carbureter, the combination with an-air intake having a pair ofmembers movable in two directions, of co-operating means controlled bytrapped air for retarding the movement of said members in bothdirections, and a fuel nozzle located between and coiiperating with saidmembers.

7. In a carbureter, the combination with an air intake having a pair ofmembers movable in'two 'directions, of cotiperating means controlledbyair trapped in a POSI- 'tion isolated from-the air intake for retardingthe movementj of said members in both directions, and a fuel nozzlelocated between and cooperating with said members.

8. In a carbureter, the combination with a member movable in twodirections and having-a pair of plane walls, of means for trappingairbetween said walls, and a stationary abutmentlocated in the spacebetween said walls and'operative to retard and to limit the-movement ofsaid member in both directions. i

9. In a carbureter, the combination with a rocking member having twoplane radial 1,1-zaass walls, of means for trapping air between saidwalls, and an abutment located-within the space between said Walls andoperative to retard and to limit the movement of said member in bothdirections.

10. In a carbureter, the combination with a rocking member having twoplane radial walls located substantially at right angles, of means-fortrapping air between said walls, and anabutment located within the spacebetween said walls and operativeto retard and to limit the movement'ofsaid member in both directions.

11. In a carbureter, the combination with an air intake having co-actingmembers movable in two directions, of coiiperat-ing pneumatic means forretarding the movement of both members in both directions, and a fuelnozzle located between and cooperative with said members,

12. In a carbureter, the combination with an air intake havingco-acting' rocking members, of cobperating pneumatic :means forretarding the movement of both members in both directions, and a fuelnozzle located between and cotiperative withsaid members.

13. In a carbureter, the combination with an air intake havingintergeared co-ac'ting rocking members, of co'tiperating pneumatic meansfor retarding the movement-of both members in both directions, and afuel noz-- zle located between and cooperative with said members. v

14. In a carbureter, the combination with an air intake having co-actingmembers movable in opposite directions, of pneumatic means cooperatingwith each member for retarding the movement of'said member in bothdirections, and a fuel nozzle located between and cooperative with-saidmembers.

15. Ina carbureter, the combination with acasing forming a chamberopenat one side only,v of a plate for closingthe open side of the chamber, apair of co-acting membersmovable in oppositedirections and locatedwithin the casing and adapte'd'to form therebetween an air intake, meanscooperating with said members for retarding the movement of the samein'both directions,'and a:

fuel nozzle located between and cooperating with said members.

16. In a carbureter, the combination with a casing forming a chamberfopen at one side only, of a plate for closing the open side of thechamber, a pair of movable members located within said casing andadapted to form therebetween an air intake of variable amplitude, meanssupported by the easing and the plate for supporting said movablemembers, means for retarding and limiting the movement of said membersand a fuel nozzle located between and coiiperating with said members.

17 .In a carbureter, the co'mbination'with a casing forming a chamberopen at one side only, of a plate for closing the open side of thechamber, a pair of co-acting rocking members located within the casingand adapted to form therebetween an air intake of variable amplitudeeach of said rocking members having a pair of plane radial walls adaptedto trap air between the same and the casing, and a pair of fixedabutments one for each member located within the trapped air between thewalls for retarding the movement of said members in both directions.

' 18. In a carbnreter, the combination with a casing forming a chamberopen at one side only, of a plate for closing the open side of thechamber, a pair of (so-acting rocking members located Within the casingand adapted to form therebetween an air intake of variable amplitudeeach of said r0ck ing members having a pair of plane radial Wallsadapted to trap air between. the same and the casing, and a pair offixed abutments one for each member carried by said plate and locatedwithin the trapped air between the walls for retarding the movement ofsaid members in both directions.

19. In a carbureter, the combination with an air intake having a pair ofmembers SYDNEY I. PRESCOTT.

Witnesses:

JAMES A. MGOANN, ELIZABETH LOUISE RUSSELL.

